Strawberry seedling breeding technology
1, choose the land, fertilize, do 畦. The nursery should choose soil loose, fertile sandy soil land blocks, require drainage and irrigation convenience, should not choose the land of clay soil. After the nursery is selected, thoroughly remove the remaining branches, dead leaves and weeds, and then conduct comprehensive ploughing. The ploughing operation should be carefully combined with ploughing to remove the roots of the underground roots, especially the roots of the weedy roots. The depth is 20-25cm, and the final leveling is. Fuping basal fertilizer, applied per acre 4000kg organic fertilizer, NPK fertilizer 30-40kg. After fertilization, one more ploughing is performed to allow the fertilizer to mix well with the topsoil. It is flat and it is generally 1.5--2m wide.
2, seedlings choice. The purpose of professional nursery seedlings is to obtain more and robust seedling shoots. Therefore, pure and vigorous growing varieties should be used. Virus seedlings with multiple stems and strong seedlings should be used as seedlings.
3, colonization of seedlings. Most of the species in areas north of Baoding are generally planted in early April or fall in the previous year. Two rows of 1.5m were planted with a spacing of 44cm; 3m rows of 2m were planted with a spacing of 50cm. When planting, you should first plan the pit or trench by the determined row spacing, and then plant. When planting, the roots of the plants should be allowed to stretch naturally, and the degree of earthing should not be buried or rooted after the flattening. After the planting, it should be irrigated in time and carefully checked. For the planting too deep or too shallow seedlings, make timely adjustments. In case of high-temperature weather planting, if the seedlings are found to be wilting at noon, they should be watered sooner or later. After all the seedlings have survived, loosen the soil 1 times to eliminate soil compaction caused by watering.
4, timely removal of buds in order to concentrate plant nutrient seedlings.
5. On June 10th, about 1 g of gibberellin was dissolved in a highly alcoholized water and sprayed with three sprayers. The heart was sprayed and sprayed once a week. Promote the occurrence of stolons.
6, nursery management. After the seedlings grow slowly, if the leaf color is lighter and the petioles are smaller, topdressing should be carried out. If topdressing fertilizer is used, the concentration of urea and potassium dihydrogen phosphate should be controlled at 0.3% and the top dressing interval should be 10-15 hours. Due to the fertile soil and large space in the nursery, it is very easy to grow grass. Repeated weeding is repeated several times. Before the emergence of stolons, combine weeding and loose soil to remove old leaves in time. When a large number of stolons occur, they should not be squatted. It is best to remove the weeds by hand. When the shoots of the seedlings occur, the vines should be introduced in time to press the soil so that the pods will be evenly distributed on the ground and the adventitious roots will occur early.
7. When the number of taro shoots produced has reached the propagation coefficient, the stems are topping and the stems should be removed again in time to facilitate the growth of the shoots and make them more robust so as to facilitate the use of the field.
8ã€Controlling watering in early August can make the seedlings enriched, watering on the 3rd day prior to planting to facilitate seedling raising and facilitate the complete improvement of the root system.
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